class Settings:

    def __init__(self):
        # 屏幕设置
        self.width = 1200
        self.height = 800
        self.bg_color = (230,230,230)

        # 飞船设置
        self.ship_speed = 10
        self.ship_limit = 3

        # 子弹设置
        self.bullet_speed = 20
        self.bullet_width = 300
        self.bullet_height = 15
        self.bullet_color = (60,60,60)
        self.button_allow = 3

        # 外星人设置
        self.alien_speed = 5.0
        self.fleet_drop_speed = 10
        self.fleet_direction = 1

